Péter Komjáth (born 8 April 1953) is a Hungarian mathematician, working in set theory, especially combinatorial set theory. Komjáth is a professor at the Faculty of Sciences of the Eötvös Loránd University. He is currently a visiting faculty member at Emory University in the department of Mathematics and Computer Science.

Komjáth won a gold medal at the International Mathematical Olympiad in 1971. His Ph.D. advisor at Eötvös was András Hajnal, and he has two joint papers^[1] with Paul Erdős. He received the Paul Erdős Prize in 1990. He is a member of the Hungarian Academy of Sciences.

• Komjáth, Péter and Vilmos Totik: Problems and Theorems in Classical Set Theory, Springer-Verlag, Berlin, 2006. ISBN 0-387-30293-X
• Komjáth, Péter (1988), "A simplified construction of nonlinear Davenport–Schinzel sequences", Journal of Combinatorial Theory, Series A, 49 (2): 262–267, doi:10.1016/0097-3165(88)90055-6, MR 0964387.
• Komjáth, Péter (1988), "Consistency results on infinite graphs", Israel Journal of Mathematics, 61 (3): 285–294, doi:10.1007/BF02772573, MR 0941243, S2CID 123105669.
• Komjáth, Péter (2011), "The chromatic number of infinite graphs—A survey" (PDF), Discrete Mathematics, 311 (15): 1448–1450, doi:10.1016/j.disc.2010.11.004.

• Péter Komjáth at the Mathematics Genealogy Project
• Hungarian Academy of Sciences Webpage
• Eötvös University Webpage
• Rutgers University Webpage